For the past two days i've had nausea, white tongue, it burns a bit and burping. i took pepecid ac last night and it helped a bit but i still have nau?

Nausea: Sounds like a non specific gastritis. I would continue with the Pepcid (famotidine) for a few days and you should get better . I would stay off fried and fatty foods as well

Nausea: You may have reflux, first also make sure as you are in the reproductive age group in a right situation, rule out pregnancy also, if negative, need to treat the stomach problem which may be reflux or ulcer. You can continue the Pepcid for 6-8 wks or try Prilosec or prevacid (lansoprazole) over the counter got 6-8 wks. If symptom persists see your doctor.